Question

the concentration of solutes in a red blood cell is about a third that of seawater – about 0.3 m. if red blood cells are immersed in pure water, they swell. calculate the osmotic pressure at 25 °c of red blood cells across the cell membrane from pure water. (include units with your answer, in atm)

Answer 1

The osmotic pressure at 25 °c of red blood cells across the cell membrane from pure water is 7.34atm

Given: Concentration of Red blood cell C=0.30M, R=0.0821, T=298k

Osmotic pressure =CRT

Osmotic pressure=0.3 × 0.0821 × 298

Osmotic pressure =7.33979 ≃ 7.34atm

What is osmotic pressure?

Osmotic pressure is defined as the pressure that must be applied to the solution side to stop fluid movement when a semipermeable membrane separates a solution from pure water.

What would happen if red blood cells were placed in seawater?

Seawater is hypertonic to the cytoplasm in vertebrate cells and in plant cells. If a red blood cell and a plant cell were placed in seawater, the red blood cell would burst, and the plant cell would shrink.

What is the solute concentration of red blood cells?

Red blood cells have a solute concentration of around 0.9%.

Thus, the osmotic pressure of red blood cells is 7.34atm

To know more about osmotic pressure:

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